Function report |
Source Code:block\bio.c |
Create Date:2022-07-28 16:55:10 |
Last Modify:2020-03-17 23:13:58 | Copyright©Brick |
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Name:bio_try_merge_pc_page
Proto:static bool bio_try_merge_pc_page(struct request_queue *q, struct bio *bio, struct page *page, unsigned len, unsigned offset, bool *same_page)
Type:bool
Parameter:
Type | Parameter | Name |
---|---|---|
struct request_queue * | q | |
struct bio * | bio | |
struct page * | page | |
unsigned | len | |
unsigned | offset | |
bool * | same_page |
705 | bv = the actual vec list [ how many bio_vec's - 1] |
706 | mask = queue_segment_boundary(q) |
708 | addr2 = Change "struct page" to physical address.(page) + offset + len - 1 |
712 | If bv_len + len > queue_max_segment_size(q) Then Return false |
Name | Describe |
---|---|
__bio_add_pc_page | __bio_add_pc_page - attempt to add page to passthrough bio*@q: the target queue*@bio: destination bio*@page: page to add*@len: vec entry length*@offset: vec entry offset*@same_page: return if the merge happen inside the same page |
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